Security features bypass in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2021-39881
Published: October 5, 2021
Vulnerability identifier: #VU57048
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-39881
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the application may let a malicious user create an OAuth client application with arbitrary scope names. A remote authenticated attacker can trick a victim to authorize the malicious client application using the spoofed scope name and description.
Affected software
GitLab Enterprise Edition
Gitlab Community Edition
Gitlab Community Edition
How to mitigate CVE-2021-39881
Install updates from vendor's website.
GitLab Enterprise Edition - addressed in versions 14.1.7, 14.2.5, 14.3.1
Gitlab Community Edition - addressed in versions 14.1.7, 14.2.5, 14.3.1
Gitlab Community Edition - addressed in versions 14.1.7, 14.2.5, 14.3.1